WindowState.MAXIMIZED
The MAXIMIZED window state is an indication
that a portlet may be the only portlet being rendered in the
portal page, or that the portlet has more space compared to other portlets
in the portal page.

WindowStateException(java.lang.String text,
java.lang.Throwable cause,
WindowState state)
Constructs a new portlet state exception when the portlet needs to do
the following:
throw an exception
include a message about the "root cause" that interfered
with its normal operation
include a description message